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Analog Devices DS9034I-PCX+ — DC-DC Power Modules

DS9034I-PCX+ PowerCap Module, Back-Up Management

MPNDS9034I-PCX+
End of Life

Analog Devices DS9034I-PCX+, Back-Up Management IC, 34-PowerCap™ Module, Lithium Cell, -40°C to 85°C, Surface Mount, Tube.

$12.28Ref. price · indicative, final on quote
Packaging34-PowerCap™ Module
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DS9034I-PCX+ specifications
ParameterValue
MountingSurface Mount
Operating temperature-40°C ~ 85°C
PackageTube
FunctionBack-Up Management
Shipping infoDue to restrictions, only ground shipment is allowed.
Case34-PowerCap™ Module
Battery chemistryLithium Cell

Product details

What the DS9034I-PCX+ does in the assembly

The DS9034I-PCX+ is a Back-Up Management IC from Analog Devices, designed to provide a replaceable lithium cell and control logic for nonvolatile SRAM and real-time clock (RTC) circuits. It integrates a Lithium Cell and the necessary power-switching and write-protect functions so that an external SRAM or RTC retains data when the main supply drops.

It fits telecom base stations, outdoor industrial controllers, utility metering, and security systems that need reliable data retention through power loss. It is not qualified for automotive under-hood environments (125°C junction), but the range covers most cabinet and enclosure applications.

The 34-PowerCap Module is a surface-mount package that mates with a matching socket on the PCB — typically the DS9034PCX socket or a footprint compatible with the DS12C887 family. The module snaps onto the base SRAM/RTC device, so the battery and backup controller are field-replaceable. Ground shipment only due to the lithium cell — no air freight for this part.

Frequently asked questions

Is DS9034I-PCX+ compatible with DS12C887?

The DS9034I-PCX+ is designed as a PowerCap module for the DS12C887 and similar Dallas/Maxim RTC+SRAM devices that use the 34-pin PowerCap footprint. It is the drop-in battery/backup module for that socket. Verify the base device's pinout and socket orientation before ordering.

What is the battery life of DS9034I-PCX+?

The DS9034I-PCX+ uses a Lithium Cell. Battery life depends on the load from the attached SRAM/RTC and the ambient temperature. Typical data-sheet estimates for the PowerCap family range from several years to over a decade at room temperature with low-leakage memory. For a specific application, calculate the average current draw of the backed-up device and compare to the cell's rated capacity.

What is the difference between DS9034I-PCX+ and DS9034PCX?

The 'I' in DS9034I-PCX+ denotes the industrial temperature grade (-40°C to 85°C). The standard DS9034PCX (without 'I') is typically rated for commercial temperature range (0°C to 70°C). The package, function, and lithium cell are otherwise the same. Choose the 'I' variant for outdoor or extended-temperature environments.